Shopping cart brake



FIG. 1 is a perspective view of the a shopping cart brake showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is an enlarged left side elevational view thereof; and,

FIG. 4 is a side elevational view showing a use thereof.

The broken lines shown in FIGS. 1 and 4 of the drawing are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a shopping cart brake, as shown and described. 